[crankshaft] Disable Crankshaft when it sees a tail call.

src/crankshaft/ppc/lithium-codegen-ppc.cc

Index: src/crankshaft/ppc/lithium-codegen-ppc.cc
diff --git a/src/crankshaft/ppc/lithium-codegen-ppc.cc b/src/crankshaft/ppc/lithium-codegen-ppc.cc
index 4452bbbf9d865b96c225bb00b5bfca5b1a440d1f..ba349bd08a35b7af2510e1e54e122a63217a4174 100644
--- a/src/crankshaft/ppc/lithium-codegen-ppc.cc
+++ b/src/crankshaft/ppc/lithium-codegen-ppc.cc
@@ -3906,7 +3906,6 @@ void LCodeGen::DoCallFunction(LCallFunction* instr) {
 
   int arity = instr->arity();
   ConvertReceiverMode mode = hinstr->convert_mode();
-  TailCallMode tail_call_mode = hinstr->tail_call_mode();
   if (hinstr->HasVectorAndSlot()) {
     Register slot_register = ToRegister(instr->temp_slot());
     Register vector_register = ToRegister(instr->temp_vector());
@@ -3920,14 +3919,12 @@ void LCodeGen::DoCallFunction(LCallFunction* instr) {
     __ Move(vector_register, vector);
     __ LoadSmiLiteral(slot_register, Smi::FromInt(index));
 
-    Handle<Code> ic = CodeFactory::CallICInOptimizedCode(isolate(), arity, mode,
-                                                         tail_call_mode)
-                          .code();
+    Handle<Code> ic =
+        CodeFactory::CallICInOptimizedCode(isolate(), arity, mode).code();
     CallCode(ic, RelocInfo::CODE_TARGET, instr);
   } else {
     __ mov(r3, Operand(arity));
-    CallCode(isolate()->builtins()->Call(mode, tail_call_mode),
-             RelocInfo::CODE_TARGET, instr);
+    CallCode(isolate()->builtins()->Call(mode), RelocInfo::CODE_TARGET, instr);
   }
 }